Eur. Phys. J. Appl. Phys.
Volume 72, Number 1, October 2015
|Number of page(s)||7|
|Section||Instrumentation and Metrology|
|Published online||11 September 2015|
Electric field imaging of a high impedance surface for GNSS array decoupling application
Onera – The French Aerospace Lab, 31000
2 CNES, Antenna Department, 31400 Toulouse, France
3 Universite de Toulouse UPS, INPT, CNRS LAPLACE, 31400 Toulouse, France
a e-mail: firstname.lastname@example.org
Revised: 6 July 2015
Accepted: 18 August 2015
Published online: 11 September 2015
An original method of characterization of high impedance surfaces (HIS) is presented to exhibit electric field patterns. The electric field frames are obtained through a resistive film located in the near field domain of the HIS. The film heating is recorded using an infrared camera and gives after post-processing electric field magnitude profiles. We applied this technique to a HIS specially tuned for reducing mutual coupling in a global navigation satellite systems (GNSS) array designed for the E5 Galileo band. The mushroom-like HIS, designed and realized with the help of simulation, is located near the ground plane of a micro-strip line which allows S parameter characterization. Present measurement enables near field characterization and field structure analysis, and is therefore a complement to usual analysis. Moreover, the technique shows the very special field structure, including sub-lambda details, created by the HIS and more generally by metamaterial structures.
© EDP Sciences, 2015
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